static int msm_iommu_ctx_probe(struct platform_device *pdev)
{
	struct msm_iommu_ctx_dev *c = pdev->dev.platform_data;
	struct msm_iommu_drvdata *drvdata;
	struct msm_iommu_ctx_drvdata *ctx_drvdata = NULL;
	int i, ret = 0;
	if (!c || !pdev->dev.parent) {
		ret = -EINVAL;
		goto fail;
	}

	drvdata = dev_get_drvdata(pdev->dev.parent);

	if (!drvdata) {
		ret = -ENODEV;
		goto fail;
	}

	ctx_drvdata = kzalloc(sizeof(*ctx_drvdata), GFP_KERNEL);
	if (!ctx_drvdata) {
		ret = -ENOMEM;
		goto fail;
	}
	ctx_drvdata->num = c->num;
	ctx_drvdata->pdev = pdev;

	INIT_LIST_HEAD(&ctx_drvdata->attached_elm);
	platform_set_drvdata(pdev, ctx_drvdata);

	/* Program the M2V tables for this context */
	for (i = 0; i < MAX_NUM_MIDS; i++) {
		int mid = c->mids[i];
		if (mid == -1)
			break;

		SET_M2VCBR_N(drvdata->base, mid, 0);
		SET_CBACR_N(drvdata->base, c->num, 0);

		/* Set VMID = MID */
		SET_VMID(drvdata->base, mid, mid);

		/* Set the context number for that MID to this context */
		SET_CBNDX(drvdata->base, mid, c->num);

		/* Set MID associated with this context bank */
		SET_CBVMID(drvdata->base, c->num, mid);

		/* Set security bit override to be Non-secure */
		SET_NSCFG(drvdata->base, mid, 3);
	}

	pr_info("context device %s with bank index %d\n", c->name, c->num);

	return 0;
fail:
	kfree(ctx_drvdata);
	return ret;
}
Пример #2
0
static int ctx_driver_probe(struct platform_device *pdev)
{
	struct smmu_ctx *c = pdev->dev.platform_data;
	struct smmu_driver *drv = NULL;
	int i;
	if (!c) {
		pr_err("no platform data defined\n");
		goto fail;
	}

	printk(KERN_INFO "Probing SMMU context %s with number %d\n", c->name,
	       c->num);
	if (!pdev->dev.parent) {
		pr_err("context has no parent\n");
		goto fail;
	}

	drv = dev_get_drvdata(pdev->dev.parent);

	if (!drv) {
		pr_err("context's parent has no drvdata\n");
		goto fail;
	}

	printk(KERN_INFO "Programming M2V tables for context at %08x\n",
	       (unsigned int) drv->base);

	
	for (i = 0; i < MAX_NUM_MIDS; i++) {
		int mid = c->mids[i];
		if (mid == -1)
			break;

		SET_M2VCBR_N(drv->base, mid, 0);
		SET_CBACR_N(drv->base, c->num, 0);

		
		SET_VMID(drv->base, mid, mid);

		
		SET_CBNDX(drv->base, mid, c->num);

		
		SET_CBVMID(drv->base, c->num, mid);

		
		SET_NSCFG(drv->base, mid, 3);
	}

	return 0;
fail:
	return -1;
}
static int ctx_driver_probe(struct platform_device *pdev)
{
	struct smmu_ctx *c = pdev->dev.platform_data;
	struct smmu_driver *drv = NULL;
	int i;
	if (!c) {
		pr_err("No platform data defined\n");
		return -ENODEV;
	}

	printk(KERN_INFO "Probing SMMU context %s with number %d\n", c->name,
	       c->num);

	if (!pdev->dev.parent)
		return -ENODEV;

	drv = dev_get_drvdata(pdev->dev.parent);

	if (!drv)
		return -ENODEV;

	printk(KERN_INFO "Programming M2V tables for context at %08x\n",
	       (unsigned int) drv->base);

	/* Program the M2V tables for this context */
	for (i = 0; i < MAX_NUM_MIDS; i++) {
		int mid = c->mids[i];
		if (mid == -1)
			break;

		SET_M2VCBR_N(drv->base, mid, 0);
		SET_CBACR_N(drv->base, c->num, 0);

		/* Set VMID = MID */
		SET_VMID(drv->base, mid, mid);

		/* Set the context number for that MID to this context */
		SET_CBNDX(drv->base, mid, c->num);

		/* Set MID associated with this context bank */
		SET_CBVMID(drv->base, c->num, mid);

		/* Set security bit override to be Non-secure */
		SET_NSCFG(drv->base, mid, 3);
	}

	return 0;
}
Пример #4
0
static int msm_iommu_ctx_probe(struct platform_device *pdev)
{
	struct msm_iommu_ctx_dev *c = pdev->dev.platform_data;
	struct msm_iommu_drvdata *drvdata;
	struct msm_iommu_ctx_drvdata *ctx_drvdata = NULL;
	int i, ret, irq;
	if (!c || !pdev->dev.parent) {
		ret = -EINVAL;
		goto fail;
	}

	drvdata = dev_get_drvdata(pdev->dev.parent);

	if (!drvdata) {
		ret = -ENODEV;
		goto fail;
	}

	ctx_drvdata = kzalloc(sizeof(*ctx_drvdata), GFP_KERNEL);
	if (!ctx_drvdata) {
		ret = -ENOMEM;
		goto fail;
	}
	ctx_drvdata->num = c->num;
	ctx_drvdata->pdev = pdev;
	ctx_drvdata->name = c->name;

	irq = platform_get_irq_byname(to_platform_device(pdev->dev.parent),
				      "nonsecure_irq");
	if (irq < 0) {
		ret = -ENODEV;
		goto fail;
	}

	ret = request_threaded_irq(irq, NULL, msm_iommu_fault_handler,
				   IRQF_ONESHOT | IRQF_SHARED,
				   "msm_iommu_nonsecure_irq", ctx_drvdata);

	if (ret) {
		pr_err("request_threaded_irq %d failed: %d\n", irq, ret);
		goto fail;
	}

	INIT_LIST_HEAD(&ctx_drvdata->attached_elm);
	platform_set_drvdata(pdev, ctx_drvdata);

	ret = clk_prepare_enable(drvdata->pclk);
	if (ret)
		goto fail;

	if (drvdata->clk) {
		ret = clk_prepare_enable(drvdata->clk);
		if (ret) {
			clk_disable_unprepare(drvdata->pclk);
			goto fail;
		}
	}

	/* Program the M2V tables for this context */
	for (i = 0; i < MAX_NUM_MIDS; i++) {
		int mid = c->mids[i];
		if (mid == -1)
			break;

		SET_M2VCBR_N(drvdata->base, mid, 0);
		SET_CBACR_N(drvdata->base, c->num, 0);

		/* Route page faults to the non-secure interrupt */
		SET_IRPTNDX(drvdata->base, c->num, 1);

		/* Set VMID = 0 */
		SET_VMID(drvdata->base, mid, 0);

		/* Set the context number for that MID to this context */
		SET_CBNDX(drvdata->base, mid, c->num);

		/* Set MID associated with this context bank to 0 */
		SET_CBVMID(drvdata->base, c->num, 0);

		/* Set the ASID for TLB tagging for this context to 0 */
		SET_CONTEXTIDR_ASID(drvdata->base, c->num, 0);

		/* Set security bit override to be Non-secure */
		SET_NSCFG(drvdata->base, mid, 3);
	}
	mb();

	if (drvdata->clk)
		clk_disable_unprepare(drvdata->clk);
	clk_disable_unprepare(drvdata->pclk);

	dev_info(&pdev->dev, "context %s using bank %d\n", c->name, c->num);
	return 0;
fail:
	kfree(ctx_drvdata);
	return ret;
}
Пример #5
0
static int msm_iommu_ctx_probe(struct platform_device *pdev)
{
	struct msm_iommu_ctx_dev *c = pdev->dev.platform_data;
	struct msm_iommu_drvdata *drvdata;
	struct msm_iommu_ctx_drvdata *ctx_drvdata = NULL;
	int i, ret;
	if (!c || !pdev->dev.parent) {
		ret = -EINVAL;
		goto fail;
	}

	drvdata = dev_get_drvdata(pdev->dev.parent);

	if (!drvdata) {
		ret = -ENODEV;
		goto fail;
	}

	ctx_drvdata = kzalloc(sizeof(*ctx_drvdata), GFP_KERNEL);
	if (!ctx_drvdata) {
		ret = -ENOMEM;
		goto fail;
	}
	ctx_drvdata->num = c->num;
	ctx_drvdata->pdev = pdev;

	INIT_LIST_HEAD(&ctx_drvdata->attached_elm);
	platform_set_drvdata(pdev, ctx_drvdata);

	ret = clk_enable(drvdata->pclk);
	if (ret)
		goto fail;

	if (drvdata->clk) {
		ret = clk_enable(drvdata->clk);
		if (ret) {
			clk_disable(drvdata->pclk);
			goto fail;
		}
	}

	/* Program the M2V tables for this context */
	for (i = 0; i < MAX_NUM_MIDS; i++) {
		int mid = c->mids[i];
		if (mid == -1)
			break;

		SET_M2VCBR_N(drvdata->base, mid, 0);
		SET_CBACR_N(drvdata->base, c->num, 0);

		/* Set VMID = 0 */
		SET_VMID(drvdata->base, mid, 0);

		/* Set the context number for that MID to this context */
		SET_CBNDX(drvdata->base, mid, c->num);

		/* Set MID associated with this context bank to 0 */
		SET_CBVMID(drvdata->base, c->num, 0);

		/* Set the ASID for TLB tagging for this context to 0 */
		SET_CONTEXTIDR_ASID(drvdata->base, c->num, 0);

		/* Set security bit override to be Non-secure */
		SET_NSCFG(drvdata->base, mid, 3);
	}
	mb();

	if (drvdata->clk)
		clk_disable(drvdata->clk);
	clk_disable(drvdata->pclk);

	dev_info(&pdev->dev, "context %s using bank %d\n", c->name, c->num);
	return 0;
fail:
	kfree(ctx_drvdata);
	return ret;
}